Dessicate

You evaporate moisture from the body of a living creature, dealing it 1d6 points of dessication damage and making it dehydrated. A successful CON save results in half damage and negates the dehydration. A plant or elemental of the water subtype takes 1d8 points of damage. An elemental of the earth subtype takes only 1d4 points of damage.

At Higher Levels. At 5th level, this spell deals an extra 1d6 desiccation damage (1d8 to plants and elementals with the water subtype, 1d4 to elementals of the earth subtype) to the target on a failed save. All damage rolls increase again at 11th level (3d6, 3d8 and 3d4) and again at 17th level (4d6, 4d8 and 4d4).